Cart gathering bot
The adaptive fix RFID chips on the carts at a store him and then have a wheeled lot like they used to push the carts now roll through the parking lot behind the parked cars and when it senses a cart it would either turn and try to get the car onto the chain or it would ask how loud someone to put the cart on the chain or position it close to the cart gathering bought so that it could get it done.
Could be useful for grocery stores at night instead of paying somebody to do it they just send the bought out together maul up. During the day would become a challenging but doable. Hard part would be possible damage to vehicles and people running into it.
